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- DANDAN YANG
- 2010

This article concerns the existence of solutions for fractional-order differential inclusions with boundary-value conditions. The main tools are based on fixed point theorems due to Bohnerblust-Karlin and Leray-Schauder together with a continuous selection theorem for upper semi-continuous multivalued maps.

Impulsive differential equations, which arise in physics, population dynamics, economics, and so forth, are important mathematical tools for providing a better understanding of many real-world models, we refer to [1–5] and the references therein. About the applications of the theory of impulsive differential equations to different areas, for example, see… (More)

The study of the free idempotent generated semigroup IG(E) over a biordered set E has recently received a deal of attention. Let G be a group, let n ∈ N with n ≥ 3 and let E be the biordered set of idempotents of the wreath product G ≀ Tn. We show, in a transparent way, that for e ∈ E lying in the minimal ideal of G ≀ Tn, the maximal subgroup of e in IG(E)… (More)

- Chuanzhi Bai, Dandan Yang, Hongbo Zhu
- Appl. Math. Lett.
- 2007

In this paper we investigate the existence of solutions of a class of four-point boundary value problems for a fourth order ordinary differential equation. Our analysis relies on a nonlinear alternative of Leray–Schauder type. c © 2007 Elsevier Ltd. All rights reserved.

In this paper we investigate the existence of positive solutions of the following nonlinear semipositone fourth-order two-point boundary-value problem with second derivative: u(t) = f(t, u(t), u′′(t)), 0 ≤ t ≤ 1, u′(1) = u′′(1) = u′′′(1) = 0, ku(0) = u′′′(0), where −6 < k < 0, f ≥ −M , and M is a positive constant. Our approach relies on the Krasnosel’skii… (More)

- Dandan Yang, Zhiqiang Wei, Yongquan Yang
- 2015 International Conference on Cyber-Enabled…
- 2015

This paper solves the problem of the excessive memory footprint and the slow speed of parsing when using the DOM method to parse the XML data. As we know the current XML parsing technology is the key of XML research field and now there are a lot of XML parsers, their works plays a significant role in promoting XML parsing, but failed to achieve a good… (More)

- Zhe Wei, Yixiong Feng, Jianrong Tan, Junhao Wu, Dandan Yang, Jinlong Wang
- Computers & Mathematics with Applications
- 2009

- Dandan Yang, Chuanzhi Bai
- J. Applied Mathematics
- 2013

- DANDAN YANG
- 2007

In this paper, we prove the existence of periodic solutions of a delayed periodic predator-prey system based on continuation theorem of coincidence degree.

- Jianfei Huang, Dandan Yang
- Int. J. Comput. Math.
- 2017